2161579934 has 8 divisors (see below), whose sum is σ = 3244283400. Its totient is φ = 1080152136.

The previous prime is 2161579933. The next prime is 2161579967. The reversal of 2161579934 is 4399751612.

2161579934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2161579934² = 9344855622142888712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161579933) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 314669 + ... + 321464.

It is an arithmetic number, because the mean of its divisors is an integer number (405535425).

Almost surely, 2^2161579934 is an apocalyptic number.

2161579934 is a deficient number, since it is larger than the sum of its proper divisors (1082703466).

2161579934 is a wasteful number, since it uses less digits than its factorization.

2161579934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637834.

The product of its digits is 408240, while the sum is 47.

The square root of 2161579934 is about 46492.7944309653. The cubic root of 2161579934 is about 1292.9759098557.

The spelling of 2161579934 in words is "two billion, one hundred sixty-one million, five hundred seventy-nine thousand, nine hundred thirty-four".